[orca-list] traceback in firefox

[Josà Vilmar EstÃcio de Souza <vilmar informal com br>]

Hi all.
Running firefox 10.2, latest orca from master and all updates applied to 
at-spi2-core, I am receiving the following:

Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/orca/input_event.py", 
line 513, in processInputEvent
    consumed = self.function(script, inputEvent)
  File 
"/usr/local/lib/python2.7/dist-packages/orca/scripts/toolkits/Gecko/script.py", 
line 5833, in goPreviousLine
    self.findPreviousLine(obj, characterOffset)
  File 
"/usr/local/lib/python2.7/dist-packages/orca/scripts/toolkits/Gecko/script.py", 
line 5642, in findPreviousLine
    self.findPreviousCaretInOrder(currentLine[0][0], currentLine[0][1])
  File 
"/usr/local/lib/python2.7/dist-packages/orca/scripts/toolkits/Gecko/script.py", 
line 4385, in findPreviousCaretInOrder
    elif obj.childCount and obj[obj.childCount - 1] and not doNotDescend:
  File "/usr/lib/python2.7/dist-packages/pyatspi/Accessibility.py", 
line 163, in <lambda>
    Atspi.Accessible.__getitem__ = lambda *args: 
exwrap(Accessible_getitem, *args)
  File "/usr/lib/python2.7/dist-packages/pyatspi/Accessibility.py", 
line 147, in exwrap
    return func(*args)
  File "/usr/lib/python2.7/dist-packages/pyatspi/Accessibility.py", 
line 34, in Accessible_getitem
    raise IndexError
IndexError

In addition orca stays completely mute even if I try switch to another 
window.
If I kill firefox orca returns.

To reproduce try the following:

1. Launch FF and go to www.google.com.
2. Press ctrl+k, type linux weekly news or something like and press enter.

3. After the page is loaded press shift+h until you reach the first head 
of the page.

4. Press shift+h one more time.
Orca should present the latest head of the page but instead stays 
completely mute.

Thanks.